Could u explain the height adjustment's method of all AST series in front?
same as ohlins R&T? or KW v3?

AST 5100 is more like KW V3 and the rest of the coilover systems out there. You spin the lower spring perch for height adjustment. AST 4200/4250, Ohlins R&T are the only two systems that have adjustable lower mounts.